Machine for jiggering oval dinnerware



Oct. '18, 1949. R. F. MALARKEY 2,485,159

MACEINE FOR JIGGERING OVAL DINNERHARE Filed Sept. 25, 1948 4Sheets-Sheet l INVENTOR.

PALPh F. M194 flE/(EY.

BY 3 ,(b 'mzaur, d m www krroe/vifs.

Oct. 18, 1949.

Filed Sept. 25, 1.948

R. F. MALARKEY MACHINE FOR JIGGERING OVAL DINNERWARE 4 Sheets-Sheet 2YINVENTOR. PAL/PH F1 MALARKEX .Oct. 18, 1949. v MALARKEY 2,485,159

MACHINE FOR JIGGERING OVAL DINNERWARE Filed Sept. 25, 1948 4Sheets-Sheet 5 IN VEN TOR.

PAL/ H F. MALARKEY.

0a. 18, 1949. R. F. MALARKEY 2,485,159

MACHINE FOR JIGGERING OVAL DINNERWARE Filed Sept. 25, 1948 4 Shets-Sheet4 INVENTOR. PAL/w E MALARKEY.

Patented Oct. 18, 1949 MACHINE FOR JIGGERING OVAL DINNERWARE Ralph F.Malarkey, Meadowlands, Pa. Application September 25, 1948, Serial No.51,275

14 Claims.

This invention relates to apparatus for moving a tool in an ellipticalpath, and more particularly to apparatus for jiggering oval dinnerwareand the like.

It is among the objects of this invention to provide such apparatuswhich is easily adjustable for dinnerware and the like of differentsizes and of different lengths relative to their widths, which is ofrelatively simple and inexpensive construction, which is easy to operateand which is automatic.

In accordance with this invention a lower vertical shaft has its lowerend connected to a tool, such as a jigger tool, which is to be moved inan elliptical path. In making oval dinnerware, such as platters, thetool should move in a path that will jigger plastic clay on an oval moldsupported below the tool. The shaft just mentioned is mounted in abearing which is supported for reciprocation in a substantially straightline along the major axis of the elliptical path. Although the bearingsupport may be a straight track, it is preferred to use horizontal linkspivotally connected on vertical axes to lateral projections of thebearing at diametrically opposite points. The links extend tanentiallyof the bearing away from it in opposite directions, and their outer endsare pivotally connected on vertical axes to a supporting frame. An uppervertical shaft has its lower end offset laterally of the upper end ofthe lower shaft, and the adjacent ends of the two shafts are rigidly,but preferably adjustably, connected together so that, in effect, acrank is formed. The upper shaft is mounted in a bearing which issupported for reciprocation in a substantially straight line along theminor axis of the elliptical path. The supporting means for this bearingpreferably includes another pair of horizontal links extendingsubstantially at right angles to the first pair. Means is provided forrotating one of the two connected shafts, most suitably the upper shaftwhich in turn rotates the lower shaft. Due to the mounting of the twobearings, the crank-like connection of the two shafts causes thebearings to reciprocate in horizontal straight lines at right angles toeach \engaged the mold moves upward and the tool travels around themold. When the mold is lowered after the jiggering operation has beencompleted, it automatically disengages the clutch so that the machinestops until the clutch is manually engaged again. The movements of themold support most suitably are controlled by a rotating cam.

Various parts of this apparatus are described as being vertical orhorizontal. This is merely to set forth the positions of the partsrelative to one another for ease of description, and is not intended tolimit the invention.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, in which Fig. 1 is a side View of the J'iggeringmachine; Fig. 2 is a front view; Fig. 3 is a reduced plan view; Fig. 4is a View like Fig. 3, except that the jigger tool is shown at rightangles to its former positions; and Fig. 5 is a horizontal section takenon the line V-V of Fig. 1.

Referring to the drawings, a base plate I supports on its rear endportion a frame 2 that extends upward and then forward over the base.Mounted, in the upright portion of the frame is an electric motor 3which is connected by a belt 4 to a pulley 5 rotatably mounted on ahorizontal shaft 1 below it. The shaft is journaled in a gear housing 8mounted on a support 9 near the bottom of the frame. The inner end ofthe shaft carries a bevel gear I I that meshes with a similar gear l2 onthe lower end of a vertical drive shaft 13 that extends up out of thehousing and has its upper end journaled in a bearing M in the upper partof the frame. Projecting from the front side of pulley 5 is a sleeve 6through which shaft! extends. The outer or front end of the sleeve andthe corresponding end of shaft I support the two parts [6 and [1,respectively, of a normally disengaged clutch so that the pulley andsleeve can rotate without turning the shaft. The clutch is aconventional clutch, the details of which form no part of thisinvention. Part [6 is rigidly fastened to sleeve 5, but part H issplined on shaft 1 and is spring pressed toward part [6. Clutch part I!normally is held forward away from the other part by means of a levervl8 that encircles part I! and has a free end extending away from it. Itcan be engaged by lifting a lever l8 projecting from one side of it. Theouter end of this lever encircles the front end of a rod l9 that ispivotally connected to the upper end of a bent lever 20 supported by abracket 2| mounted on the base plate. Rod I9 is provided with a lug 22that engages lever l8 to the lower end of a link 26 whose upper end ispivotally connected to the rear end of an arm 21. The central portion ofthis arm is mounted on a shaft 28 journaled in bearings 29 mounted inframe 2 above the motor. The arm normally is inclined forward anddownward and extends out beneath the projecting upper portion of theframe. The front end of this arm is forked and has a bolt 3| extendingtransversely through it and through an upright pin 32 disposed in thefork. Mounted on the upper end of the pin is a collar 33 which is heldin place by a setscrew 34 so that the collar can be turned or raised andlowered on the pin as .desired. Rigidly mounted on the collar is asupporting member 36 for an oval or elliptical plaster mold 31 on whichplastic clay can be jiggered to form a platter or the like. It is mostconvenient to have the major axis of the mold extend from front to backof the machine.

The rear end of the inclined arm is provided with an upward extensionthat has a cam follower roller 38 on its upper end. This roller extendsup into a deep notch 39 in a cam 4| that is secured to a shaft 42journaled in bearings 43 mounted on the rear ends of horizontalsupporting members 4'4 fastened to the frame. Shaft 42 is turned by agear 46 mounted thereon and meshing with a worm 41 mounted on Verticaldrive shaft I 3. The shape of the cam is such that when it is rotated itforces the roller downward until arm 21 is substantially horizontal,and. then holds in that position until the cam completes a revolution toreturn the notch to the position where the roller is moved up into it bythe weight on the opposite end of the arm. Downward movement of link 26causes lever 29 to pull lug 22 back through the eye in lever l8. Upwardmovement of the rear end of arm 21 causes link 26 to lift the rear endof lever 29 and thereby move rod [9 forward to cause lug 22 to pushlever l8 ahead for disengaging the clutch so that the drive shaft willstop turning. The cam preferably is so shaped that it quickly moves themold almost to its uppermost position, and after a suitable dwell itraises the mold slightly higher for a moment, and then allows it to fallaway a few thousandths of an inch before lowering it.

While the mold 31 is held in horizontal position by arm 21, a batt ofplastic clay thereon is jiggered by means of a profile tool 5| directlyabove it. This tool is adjustably connected by bolts 52 to a slotted arm53 projecting laterally from the lower end of a short vertical shaft 54journaled in a bearing 56. The center portion of the hearing has a pairof arms 51 projecting horizontally from it in opposite directions withtheir outer ends pivotally connected by vertical pins 58 to the innerends of a pair of horizontal links 59. These links extend in oppositedirections from the sides of the arms and have their outer endsDivotally connected by vertical pins 6] to a pair of parallel horizontalside members 62 mounted in the forward upper portion of the frame, Whenthe coniii) ter of shaft 54 is over the center of the mold, as shown inFig. 4, these two links extend parallel to each other with their innerends preferably passing each other. Bearing 56 is supported by theselinks so that it can be swung back and forth lengthwise of the mold in asubstantially straight line for a considerable distance, but it isprevented by the links from moving transversely of the machine.

The upper end of shaft 54 is rigidly connected to one end of a crank arm66 that is provided with a rotatable horizontal adjusting screw 61 alongwhich I put 68 travels when the screw is turned. The nut is rigidlymounted on the lower end of an upper vertical shaft 69 that is journaledin an upper bearing H. Like the lower bearing, this one is provided withdiameterically opposite arms 12 which are pivotally connected byvertical pins 13 to the inner ends of a pair of horizontal links 14.These arms are disposed at substantially right angles to arms 51 of thelower bearing, and the upper links likewise are substantially at rightan les to the lower links. Therefore, the outer ends of the upper linksare pivotally connected by vertical pins 18 to front and rear crossmembers 11 supported in the frame above side members 62. Consequently,the upper hearing, which is supported by the upper links, can swingcross ways of the machine in a substantially straight line but can notmove in any other direction. It will be seen that the two bearings 56and H can reciprotate in horizontal straight lines at right angles toeach other. Mounted on the upper end of upper shaft 69 is a pulley 8|that is driven by a belt 82 and a pulley 83 from the upper end ofvertical drive shaft 13. The belt has enough elasticity to permit thefront pulley to move transversely of the machine in a straight line.

The upper and lower shafts 69 and 54 and the connecting arm 66 serve asa crank which is rotated by upper belt .82. As the lower shaft isrotated by the upper one, it rotates the jigger tool, but itsimultaneously carries the tool in an elliptical path because the crankarm 66 reciprocates the lower shaft lengthwise of the mold due to thefacts that upper links 14 keep the upper shaft from moving in thatdirection and that movement of the lower shaft transversely of the moldis prevented by the lower links 59. As the crank arm prevents the twoshafts from rotating on the same axis and as the lower shaft can onlymove forward and backward, it follows that the crank arm reciprocatesthe upper shaft transversely of the mold at the same time that the lowershaft moves lengthwise of i To jig er a larger oval of the same shape,tool 5| is merely adjusted outward on arm 53. If it is desired tolengthen the major axis of the elliptical path without changing itsminor axis, adjusting screw 61 is turned to move lower shaft 54 fartheraway from the upper shaft, thereby increasing the distance that the toolis moved forward and backward without affecting the length of itsreciprocation c'rossways.

In operation, a mold with a batt of clay on it is placed on supportingmember 35 which is formed for holding the mold in a predeterminedposition. Foot pedal 25 then is depressed to cause the motor to beoperatively connected to drive shaft l3. Rotation of the drive shaftcauses cam 4'! to depress inclined arm 21 and thereby raise the mold tohorizontalpositionbelow thejiggeredtool. Simultaneously, the drive shaftrotates the crank that supports and drives the tool. The clay on themold therefore is jiggered until the cam notch 39 allows the mold todescend. Water can be sprayed on the clay during jiggering. As the molddescends, the rising rear end of arm 21 causes the motor to bedisconnected from the drive shaft, so that the jigger tool stops. wareon it is removed from the machine and another mold with a batt on it isplaced on supporting member 36. The foot pedal is depressed again torepeat the cycle. Scrap from the jigger clay falls into a large chute 86from which it can slide into a suitable collection receptacle.

If at any time it is desired to jigger circular ware with this machine,screw 61 can be turned to move lower shaft 54 inward into axialalignment with upper shaft 65. The two shafts'then will rotate on thesame vertical axis and neither one will be able to move laterally.

According to the provisions of the patent statutes, I have explained theprinciple of my invention and have illustrated and described what I nowconsider to represent its best embodiment, However, I desire to have itunderstood that, within the scope of the appended claims, the inventionmay be practiced otherwise than as specifically illustrated anddescribed.

I claim:

A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower vertical shaft about the central portion of saidsupport, a bearing for the shaft, means supportin the bearing forreciprocation in a substantially straight line lengthwise of the mold, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, a connecting member rigidly connectly said adjacentends of the two shafts, a bearing for the upper shaft, means supportingthe last-mentioned bearing for reciprocation in a substantially straightline at right angles to said first-mentioned line, and means forrotating one of said shafts so that as the lower shaft rotates it willsimultaneously be reciprocated by said connecting member along saidfirst-mentioned straight line to carry said tool in an elliptical path.

2. A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft, means supporting the bearing forreciprocation in a substantially straight line lengthwise of the mold, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, an adjustable connection rigidly connecting saidadjacent ends of the two shafts but allowing them to be adjustedlaterally relative to each other, a bearing for the upper shaft, meanssupporting the last-mentioned bearing for reciprocation in asubstantially straight line at right angles to said first-mentioned.line, and means for rotating one of said shafts so that as the lowershaft rotates it will simultaneously be reciprocated by said connectingmember along said first-mentioned straight line to carry said tool in anelliptical path.

3. A machine for jiggering oval dinnerware comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft, means supporting the bearing forreciprocation in a substantially straight line lengthwise of the mold, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed ad- The mold with the jigger oval Ijacent one side of the upper end of the lower shaft, a crank armprojecting laterally from'one of said adjacent ends of the two shaftsand rigidly connected to the other shaft, a bearing for the upper shaft,means supporting the last-mentioned bearing for reciprocation in asubstantially straight line at right angles to said first-mentionedline, and means for rotating theupper shaft so that the lower shaft willbe rotated by it and simultaneously reciprocated by said crank arm alongsaid first-mentioned straight line to carry said tool in an ellipticalpath.

4. A machine for jiggering oval dinnerware comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft, means supporting the bearing forreciprocation in a substantially straight line lengthwise of the mold, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, a crank arm projecting laterally from one of saidadjacent ends of the two shafts, means rigidly connected to the othershaft and adjustable along the crank arm, a bearing for the upper shaft,means supporting the last-mentioned bearing for reciprocation in asubstantially straight line at right angles to said first-mentionedline, and means for rotating the upper shaft so that the lower shaftwill be rotated by it and simultaneously reciprocated by said crank armalong said first-mentioned straight line to carry said tool in anelliptical path.

5. A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft, means supporting the bearing forreciprocation in a substantially straight line lengthwise of the mold, a

jigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, a connecting member rigidly connecting said adjacentends of the two shafts, a bearing for the upper shaft, means supportingthe last-mentioned bearing for reciprocation in a substantially straightline at right angles to said first-mentioned line, a pulley rigidlymounted on the upper end of the upper shaft, a vertical drive shaft, apulley rigidly mounted on the drive shaft, and a belt connecting saidpulleys for driving said upper shaft.

6. A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft, means supporting the bearing forreciprocation in a substantially straight line lengthwise of the mold, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, a connecting member rigidly connecting said adjacentends of the two shafts, a bearing for the upper shaft, means supportingthe lastmentioned bearing for reciprocation in a substantially straightline at right angles to said first-mentioned line, means for rotatingone of said shafts so that as the lower shaft rotates it willsimultaneously be reciprocated by said connecting member along saidfirst-mentioned straight line to carry said tool in an elliptical path,and means for periodically raising said mold support to a positionadjacent the jigger tool.

'7. A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower werticel .shaft above (the nentral portion of esaid.:support, a;b.earingzfor:the shaft, tmeans supportiing 'tthe 'Joearingfor reoiprocation-ina substanifslal'lysstraight;lineilengthwise ofthemold, a J'ig er ftonlimiounted :on ;the lower end vof the :shaft, anrupperavertical shaft having itsilower-end disposed afliaeentroneside ofthe upper endof the lower sshaft, :a :connecting :rmember zrigidlyconnecting :said adjanentcends .dfatheztwo shafts, a "bearingfforxtheiupper shaft,':1neans supporting-the last- :mentioned rhearing:for .reciprocation win a substantially straight lline :at :right angles:to said ifimt-smentionedlinegazpulleyrigidly:.mounted on tthezupper-end.ofrthexuppersshafta ve'rticalrdrive ishaftsa:pulleyrigidlwmounted-onthe: drivesshaft, mtheltmonnecting said: pulleys for "drivingsaidLupmenshaf-t,z.-and: arcamrdriven from-ssaid drive shaft forperiddicallytraisingisaidimold support :toa-po- :eition adjacent the'jigger tool.

i8..A;=machine for iiggering oval dinnerware,

mil-prising a ,:support for ran oval mold, ;a Flower wertical ashaft:above :the :central; portion of said :a hearing :ior ;the :shaft, meanssupportiing tthe ahearing ifor reciprocation in a "substan- Itiallystraight linezlengthwise ofithermold, :a jigi821 ttoohmountedon -:the:lower :end of the shaft, ranumperwvertical shaft having its lower enddismused adjacent one; side :oflthe upper end of the llowersshaft, aconnectingime'mber rigidly con- ;neeting ssaid adjacent ends of :the twoshafts, a thearing for the upper sshaft, tmeans, supporting tthelast-mentioned bearing for reciprocation in a substantiallystraightlinecatdright anglestto said ,first mentionedline; aulleyirigidly-mounted on ithetupperrend nf thempperfshaft,averticaldrive rshaftswpulleysrigidly-mountedon the drive-shaft,ea'heltzconnecting said pulleys for driving :said upper :shaft,continuously -;operating driving :means, :a :manually :operable r:clutchfor :operattively connecting said ,drivingmmeans with said drive rshaft,a cam driven from :said drive :shaft ifor raising and flowering, saidtmold support, and :meansoperable-when the moldisupportvis' lowered.forv.disengaging;said-clutch.

5.9.A zmachine forzji gering oval 'dinnerware, ,;4

comprisin :a supp rfor ran oval mold, a: norrmall-y inclinedarockerarm:pivotally supportedrbettweemits :ends onuarhorizontal; axis withits-lower rend supporting the mold support, means for periodicallymoving -the-opposite: end of thearm :vdown'ctoliftnthermoldsupportztohorizontal position, a lower vertical shaft abovethegcentral por- LtriOIFOfithG mold support,;a boaringvfortheshaft,rmeans supporting the -bearing ;for ,-reciprocation :in::asubstantial;ly; straightline lengthwise of the .moldua ji -er toolmounted onzthe lower end .of athe.--shaft,- an up er verticalshafthaving its =low,er (end disposed adjacentr-one side of :theuppergend "9 1 'i fi t, :a (connecting member rigidly wonnectingsaidadjacent end of 1 the?.two shafts, i560 taabearing: for \the upper;shaft, :means -supporting :the last-mentioned bearing :for reciprocation-,in :a rsubstantiall stra:ight line at :right :angles :.:to .saidtfirstementioned line, and means for rotatonezof sa-idshafts so that-asthe lowers-shaft lTBtatQS it will simultaneous- 1y be: reciprocated :byssaid nconnecting .r member along --said :firstemendamned-straight lineto 'c-arr-ysaiditool in-an'elliptireal, path.

1.10..14. @machine for jiggeringovaLdinnerware, 6

aarmgdown to lif.t\the mold supportto operative position, means "forrotating ithe'cam, ailower vertical shaft a, above the central portionrof said -mo1d support, aa-bearingifor the. shaitfimeanssllp :porting:the bearing 1 for reciprocation ,in a ..sub- .stantially .-straightrline lengthwise of athe mold, .a ,jigger .toolimounted on the lower.endof pthe rshaft, .an -.upper vertical shaft having :its flower .endGiSIJOSBCITaQjaQEHt/QHB sideof the upperend (of the Jlower shaft, .a:connecting ,member ,rigidly connecting said. adjacent. endszof the otwoshafts, :arbearing for the upper shaft, means supporting :the=last-smentioned bearing for reciprocation tin a substantiallystraightline atright angles tosaid ,15 first-mentioned line, and means. forrotatingflne ,of said 1 shafts soythat as the lower. shaft, rotates itwill simultaneously be reciprocated by said connecting member along,said first-mentioned straight ,1ine.to.;car1 ;y said tool in anelliptical (path.

11. (A machine for ,jiggering oval .dinnenware, comprising a supportforan ovahmold, anormally inclined rocker arm pivotallycsupported abetween.its-ends-on ahorizontal axis with its lower ,end supportingthermoldsupport, .a-rotatableroam iur periodically moving the oppositeend oftthearm .down..to.1ift=the moldrs lpport topperative posi- ..tion,a, lower .vertical haft above ,the central poi:- ;tion'ofsaidmoldsupportfla bearingforthe shaft, means supporting the bearing.tfor reciprocation ina substantially. straightdine lengthwise-9f ,the

.moid, .ap'ig er .tool mounted on :the lower end -;of ,the.shaft,= annppenverticalshaft,having itslower endrdisposedi adiacentpne side of theupper end of tliellowershaft: aroonnecting .member rigidly connectingsaidadiacentends. of the ,two shafts,

,.a bearing for .the upper. shaft,..means supporting .thelast-.mentioned .bearing for reciprocation "in alsilbstantially. straghtline, at right angles to said .firstementioned line, meansfor,rotatingthe upper .shaftsoihat theiowershaft will be rotated by .it andsimultaneously reci rocated, bytsaid. con- ;necting member along :saidfirst-mentioned .straight .line tto -.carry said ,tool .in an:elliptical pathfayertical drive shaf t, gears operatively .connectingthe drive shaft with the cam, continuouslycoperating driving means,amanually oper- .-able clutch for operatively: connecting; said drivingmeans with said drive-,shaft,;and meanswactu- .atedJoy said -:arm whenit tilts backto-inclined ,position for :releasing said clutch, whereby,said

i drive shaft willstop rotating.

512.,A machine for jiggering oval dinner-ware, comprising-a support foran oval -mold,.aglower vertical. shaft above the ,central 'portionof=said support, a bearing ,for theishaft having lateral ,proiections, :apair of horizontal links pivotally connected on vertical axes' to -saidprojections on oppositesidesaof thev shaftand-extending tangentiallyofthe bearing away from it .in'copposite directions, means pivotallysupporting -.the outer ends of the ,linlrs a ,jigger tool .mounted on,the

Flower r end of the shaft, an upper .vertical .shaft havingits lowervend disposed adjacent one side -of theruper endofthelower, shaft, "aconnecting member rigidly a connecting said adj aeent ends of the twoshafts, a bearing for ,'.the-up per: shaft having ,lateral -projections,la pair -of horizontal .links pivotally' connectedon vertical axes -.tosaid last-mentioned projections and extending {tangentiallypf,the;sec0nd bearing away zfrom it =in Opposite directionsat-substantiallyright angles ,to said first-mentioned links, Emeans,ypivotally ,supporting ,the outer ends of .the sseeond ;:pair of Jinks,and :means in)! rrotetingr one -;of l-saidrshafts so that as the lowershaft and jigger tool are rotated they will simultaneously be carried inan elliptical path. i

13. A machine for jiggering oval dinnerware, comprising a support for anoval mold, a lower vertical shaft above the central portion of saidsupport, a bearing for the shaft having a pair of arms projectinglaterally from it in opposite directions, horizontal links pivotallyconnected on vertical axes to the outer ends of the arms and extendinglaterally in opposite directions away from the sides of the arms, meanspivotally supporting the outer ends of the links, a jigger tool mountedon the lower end of the shaft, an upper vertical shaft having its lowerend disposed adjacent one side of the upper end of the lower shaft, acrank arm extending laterally from one of said adjacent ends of the twoshafts and being rigidly connected to the other shaft, a bearing for theupper shaft having a pair of arms projecting laterally from it inopposite directions at substantially right angles to saidfirst-mentioned arms, horizontal links pivotally connected on verticalaxes to the outer ends of the lastmentioned arms and extending laterallyin opposite directions away from the sides of those arms, meanspivotally supporting the outer ends of the last-mentioned links, andmeans for rotating the upper shaft so that the lower shaft and jiggertool will be rotated and simultaneously carried in an elliptical path.

14. A machine for jiggering oval dinnerware,

comprising a support for an oval mold, a lower vertical shaft above thecentral portion of said support, a bearing for the shaft having a pairof arms projecting laterally from it in opposite directions, horizontallinks pivotally connected on vertical axes to the outer ends of the armsand extending laterally in opposite directions away from the sides ofthe arms, means pivotally supporting the outer ends of the links, ajigger tool mounted on the lower end of the shaft, an upper verticalshaft having its lower end disposed adjacent one side of the upper endof the lower shaft, a crank arm extending laterally from one of saidadjacent ends of the two shafts, means rigidly connected to the othershaft and adjustable along the crank arm, a bearing for the upper shafthaving a pair of arms project ing laterally from it in oppositedirections at substantially right angles to said first-mentioned arms,horizontal links pivotally connected on vertical axes to the outer endsof the last-mentioned arms and extending laterally in oppositedirections away from the sides of those arms, means pivotally supportingthe outer ends of the last-mentioned links, and means for rotating theupper shaft so that the lower shaft and jigger tool will be rotated andsimultaneously carried in an elliptical path.

RALPH F. MALARKEY.

No references cited.

